A number 7897443573 called my friend to provide some offer to Airtel customers and add 25000 to Airtel if he adds 40000 to his Airtel account and when he did so ,he got a SMS indicating transfer of that 25000 to his account. And then when it did not show the transaction in his Airtel money he called up the number . The other person asked him to share his OTP that he got. And in the end all the 40000 were transferred from his account .
